Nut-lock



(N'oMqdeL) J. W. HAWK.

NUT LOCK;

Patented June 3, 1884.

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UNITED STATES,

PATENT @rrrcn.

JOHN W. HAWK, OF HUNTSVILLE, ALABAMA.

NUT-LOO K.

SPECIFICATION forming part of Letters Patent No. 299,640, dated June 3, 1884.

Application filed March 6, 1884. (No model.)

To all whom it may concern:

Be it known that I, JOHN W. HAWK, a citizen of the United States, residing at Huntsville, in the county of Madison and State of Alabama, have invented certain new and useful Improvements in Nut-Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements in nut-l0cks; and it consists in a peculiarly-formed locking-plate and supporting-strap and .washers, whereby nuts are prevented from turning upon the bolts, as will be hereinafter more fully described and claimed.

In the annexed drawings, which fully illustrate the invention, Figure 1 is a side View of two adjacent railroad-rails secured by fishplates and bolts, and provided with my improved nut-lock. Fig. 2 is a cross-section on the line so a: of Fig. 1. Fig. 3 is a similar section'on the line y y of Fig. 1. Fig. 4 is ahorizontal section taken on the line a 2, Fig. 1. Fig. 5 is a perspective view of my improved nut-locking plate, and Fig. 6 shows a perspective view of the supporting-strap.

Like letters designate like parts.

A A represent the rails, and B B the fishplates. The rails and fish-plates are secured by bolts 0 O and nuts D D in the usual man-.

ner.

To prevent the nuts D D from turning or working loose on their bolts 0 G, I construct a metallic nut-locking plate, E, which is snugly secured between the opposite edges of the two nuts to be locked, in a manner to be hereinafter described.

The letter F represents a connecting and supporting strap of metal or other suitable material. This strap F is provided at each end with an oblong perforation or hole, a, as shown in Fig. 6, through which holes the bolts 0 0 pass when the strap is placed in position.

Around each bolt 0 on the nut side of the ing back or working loose on their bolts. The

locking-plate E is formed of a piece of metal rectangular in shape, and bent or turned over in front, as shown in Fig. 5. The locking,- plate is long enough to fit snugly between two adjacent nuts, and is provided on its face below the turned-over portion or lip c with two or more small lugs or projections, d d, which prevent the lockingplate from slipping or working out of its proper position when sprung into place between thesupporting-strap F and-the fish-plate B. Instead of the lugs dd, a slight flange, corrugation, or rib may be formed on the locking-plate to serve the same purpose as the lugs. The nut-locking plate, when sprung into position, as shown in Fig. 1, is supported on the strap F, and prevents the nuts from turning in either direction. The lip c of the looking-plate is shorter than the plate proper, and serves as a handle for inserting and removing the locking-plate. The turned-under portion 6 of this lip c bears against the strap F and further aids in holding the locking-plate in position, as shown in Fig. 3. Thus it will be seen that my invention affords a simple, effective, and cheap device for locking nuts on fish-plates, and in other situations where such devices are applicable.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a nut-locking device, the combination of. a spring locking-plate, E, supporting and connecting strap F, washers b b, nuts D D, bolts 0 O, fish-plates B, and rails AA, substantially as shown and described.

2. A nut locking device consisting of a locking-plate, E, provided with lugs d cl and lip c, a supporting-strap, F, for holding said I In testimony whereof I affix my signature in 10 locking-plate in place, and washers Z) Z), for af l presence of two witnesses. fording a space for the insertion of said loeking-plate, substantially as shown and Ge 5 scribed.

3. A spring nut-locking plate, 3, formed from one piece of metal so bent as to form a i J OHN V. HARVK.

\Vitnesses:

BURWELL J. CURRY,

lip, c, and spring 0, and provided with lugs Tumus C. BARCLAY. d d, or equivalents for the purpose described. I 

